Shenzhen Ruishuo Metal Co., Ltd. — ISO 9001 & IATF 16949 Certified
chinarswj@shieldingcover.com

Professional Surface Treatment Solutions

Comprehensive surface treatment options including nickel plating, tin plating, gold plating, and passivation. Enhance solderability, corrosion resistance, and reliability for your products.

Nickel Plating
Tin Plating
Gold Plating
Passivation

Complete Surface Treatment Portfolio

Professional plating and passivation services to enhance product performance and reliability

Nickel Plating

  • Enhanced corrosion resistance
  • Improved solderability
  • Professional appearance
  • Suitable for harsh environments

Tin Plating

  • Excellent solderability
  • Lower cost option
  • Good corrosion resistance
  • Compatible with lead-free solder

Gold Plating

  • Premium appearance
  • Excellent conductivity
  • Superior corrosion resistance
  • For high-reliability applications

Passivation

  • For stainless steel components
  • Enhances corrosion resistance
  • RoHS compliant
  • Professional finish

Typical Application Scenarios

Mobile Devices

Optical Modules

Medical Devices

5G Communications

Automotive Electronics

IoT Hardware

Finish Selection

Choosing the Right Surface Finish

The surface finish on an EMI shielding can determines how easily it solders to the PCB, how well it survives the field environment, and its long-term contact resistance. We apply and control each finish in-house to meet your electrical, mechanical, and compliance requirements.

FinishPrimary PurposeTypical ThicknessKey Benefit
Tin platingSolderability2-8 μmBest wettability for reflow / SMT
Nickel platingCorrosion + conductivity2-5 μmHard, durable, stable contact surface
Gold platingLow contact resistance0.05-0.5 μmPremium reliability, no oxidation
PassivationStainless protectionConversion layerMaximizes corrosion resistance

All finishes are available RoHS- and REACH-compliant. Salt-spray and solderability testing reports are provided on request.

FAQ

Surface Treatment Questions

Which finish gives the best solderability for SMT reflow?
Tin plating offers the best wettability and is the most common finish for board-level shielding cans that are placed and reflowed like any other SMT component. A 2-8 μm tin layer ensures consistent, reliable solder joints to the PCB ground.
When is nickel or gold plating recommended?
Nickel is chosen for durability, hardness, and corrosion resistance, and as an under-layer beneath gold. Gold is used where the lowest, most stable contact resistance and oxidation-free reliability are critical—such as medical, aerospace, or high-value RF products.
Are your finishes RoHS and REACH compliant?
Yes. All of our plating and passivation processes are available in RoHS- and REACH-compliant versions, and we can supply material declarations, salt-spray, and solderability test reports to support your certification needs.
How is corrosion resistance verified?
Corrosion resistance is verified by neutral salt-spray (NSS) testing to the duration your application requires. Stainless-steel cans are passivated to remove free iron and form a stable protective layer, while plated cans rely on the nickel/tin/gold barrier system.

Related Capabilities

Precision Stamping

High-volume forming of shielding cans before finishing.

Material Selection

Base materials paired with the right surface finish.

SMT Assembly

Reflow-ready cans placed directly onto your PCB.
Start Your Project

Need the Right
Surface Finish?

Tell us your soldering process, environment, and compliance targets. We will recommend the optimal finish and provide the test reports you need for qualification.

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